| 摘要 |
A hydrogen storage material which is an AB5 type hydrogen storage alloy having a CaCu5 type crystal structure represented by general formula: MmNiaMnbAlcCod wherein Mm is a misch metal, 4.1<a≤4.3, 0.4<b≤0.6, 0.2≤c≤0.4, 0.1≤d≤0.4, and 5.2≤a+b+c+d≤5.45, or general formula: MmNiaMnbAlcCodXe wherein Mm is a misch metal, X is Cu and/or Fe, 4.1<a≤4.3, 0.4<b≤0.6, 0.2≤c≤0.4, 0.1≤d≤0.4, 0<e≤0.1, and 5.2≤a+b+c+d+e≤5.45, characterized in that the lattice length on the c-axis is 406.2 pm or more, and a process of producing the same. |
